Serotta CSI

I'm an advocate of compacts for the majority of cyclists, including me. My issue with the 50/34 standard is that a 16 tooth drop between chainring is too much, and when you ride one you're forever dicking around between front chainrings and running across the block, and a 34 is too small for the UK.

This^

Even were I am I tend to aviod the 34t, as it really isnt that useful. I'd rather cross chain to 50:23 (11-25 casstte). So much so that I'd recently been on 3 rides before I noticed my front mech cable was buggered.

Not sure about 11-28 cassettes though. Even 11 speed. No 16t :(